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Prop Surging on knife edge

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Dances_with_cumulus

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Apr 4, 2016
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I am curious if anyone has any thoughts on what could be causing prop surging on my skybolt when I roll 90 degrees and try to knife edge. I have a Christen inverted oil system. My IA buddy (now on his way to Georgia) thinks it might be because the oil supply is in no mans land, neither upright nor inverted. But his skybolt didnt do that, and has the same I/O 360 A1A engine and same Christen system. Anyone had this experience?
 

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